Title :
underwThe Hawaii-2 Observatory seismic system
Author :
Duennebier, Fred K. ; Harris, David W. ; Jolly, James ; Babinec, James ; Copson, David ; Stiffel, Kurt
Author_Institution :
Sch. of Ocean & Earth Sci. & Technol., Hawaii Univ., Honolulu, HI, USA
fDate :
4/1/2002 12:00:00 AM
Abstract :
The Hawaii-2 Observatory seismic system is currently transmitting high-quality seismic data from the ocean floor in the central NE Pacific Ocean through Hawaii to the IRIS Data Management Center. The system includes broad-band seismic, geophone, acoustic, and ocean current sensors. The seismic sensors are buried about 0.4 m below the ocean floor to improve coupling to the ocean bottom and to reduce noise levels. The system can be remotely calibrated, leveled and locked, and gains can be changed on command from shore. Data are temporarily stored in the seismic package for retransmission as needed to correct for transmission problems and to prevent loss of data. Data generated are valuable for studies of the Earth´s structure and the dynamics of earthquakes
Keywords :
condition monitoring; earthquakes; oceanographic equipment; seismology; seismometers; underwater acoustic telemetry; Hawaii-2 Observatory seismic system; IRIS Data Management Center; acoustic sensors; broadband seismic sensors; central NE Pacific Ocean; earthquake signals; geophone sensors; high-quality seismic data transmission; marine seismic measurements; marine seismology; ocean current sensors; ocean floor; remote calibration; underwater acoustic measurements; Acoustic sensors; Couplings; Earth; Iris; Noise level; Observatories; Oceans; Packaging; Propagation losses; Sensor systems;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2002.1002475
